Bolt action rifle



July 5, 1938. v, J. KING BOLT ACTION RIFLE Filed June 16, 1936 2Sheets-Sheet 1 mm Q.

w .im Sw mw uw N E Sw 9m fm @umd *u www @m Tw PP www July 5, 1938. v. J.KING 1 Bom' ACTION RIFLE Filed June 1e, 195e 2 sheets-sheet 2 wmmmumlu\|||ll| m-im Y MA n A l. lllll s Pi llll Patented Juiy 5, i938 BGLTACTION RULE 7 Claims.

This invention relates to a bolt action rifle. It is particularly aimedto provide a simplied `and novel construction wherein the bolt has astraight pull or rectilineal action.

It is further aimed to provide a construction of the character set forthwherein the bolt has coacting oscillating worm gearing.

Another object is to provide a novel construction which will vibrate toa minimum and which will withstand the enormous breech pressurerequired, permitting the use of at least three pressure lugs, which mayremain intact, that is without being slitted.

Still further it is aimed to provide a structure which can only beassembled in the correct Way, and which cannot be fired until the boltis locked.

The more specic objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawings illustrating an loperative embodiment.

In said drawings:-

Figure 1 is a fragmentary View of a gun in side elevation, the samebeing partly in vertical section to disclose details;

Figure 2 is a vertical sectional view through the improved boltmechanism, taken longitudinally;

Figure 3 is a horizontal sectional view taken through the parts ofFigure 1 at a right angle thereto and along the axis of the bolt;

Figure 4 is a detail sectional view taken on the' line 4-4 of Figure 2;

'Figure 5 is a detail sectional View taken on the line 5-5 of Figure 4;

Figure 6 is a detail section taken on the line 6--6 of Figure 2;

Figure '1 is a detail sectional view taken on the line 1-1 of Figure 2;

Figure 8 is a detail sectional view taken on the line 8-8 of Figure 2;

Figure 9 is a fragmentary elevation of one end of the bolt;

Figure 10 is a side view of the sleeve, and

Figure 11 is a plan view of said sleeve.

Referring specifically to the drawings wherein like reference charactersdesignate like or similar parts, I0 designates a receiver suitablymounted upon the stock I I of a rie, the receiver having an interiorspace or bore I2 in line with the bore of the barrel I3 of the rifle, inthe inner end of which bore I3, a conventional projectile I4 removablyseats for firing.

Slidable and turnable in the bore I2 of the receiver I0 is a bolt I5,the forward end of which has a lug I6 for abutment by the base of theprojectile I4 and around which end, a ring il is swiveled which in turncarries a latch I8, pivoted thereto at i9, and adapted to overlap saidbase of the projectile, as best shown. in Figure 5.

Said bolt has, near the forward end, a pair of radially alined lockinglugs and at a distance from one of said lugs 20, preferably on the righthand side, the bolt is provided with a lug 2 i, simllar to andlongitudinally alined with one of the lugs 20. Said bolt I5 and partsattached thereto and carried thereby `is removably mounted in the boreI2. To this end, the bore I2 has openings into the same, diametricallyopposite horizontal grooves 22 in the wall of the receiver I0. In oneside of such wall an opening 23 is provided through which theprojectiles I4 are loaded into the gun and ejected therefrom. Saidgrooves 22 communicate with arcuate grooves 24 and 25, in the said wallof the receiver, and the lugs 20 and 2| are adapted to engage the sameso as to lock the bolt and associated parts in applied position.

At the rear end, bore I2 is enlarged into a chamber 26. In said chamber26, a sleeve 21 is disposed, the same movably surrounding the rear endportion of the bolt I 5. Rigid with the bolt I2 are one or more spirallyarranged ribs 28 which are engaged with similarly shaped spiral grooves29 provided in the bore of the sleeve 21. Said sleeve 21 also extendsover a bushing 30 loose on a re'- duced portion 3| of the bolt intowhich reduced portion, a ring nut 32 is screw threaded at 33, to preventaccidental displacement of the bushing 30.

A horizontally disposed actuating member is provided at 34 which has abifurcated portion 35, straddling a reduced end portion of the sleeve 21and being pivoted by means of abolt or otherwise as at 36 to a lug 31`on the bushing 30. In addition, a. projection 38 on the sleeve 21 isloosely disposed in a socket 39 of the operating member or slide 34.

The rear end of the sleeve 21 has one or more notches 40 therein adaptedto receive lugs 4I on a hammer 42 having a depending projection 43adapted to travel in a groove 44 suitably provided ln the receiver I0 orstock II and at the forward end being adapted to abut the upper end 45of a conventional lever ,or trigger 46.

Said hammer 42 is rigid with a ring rod 41, the latter projectingforwardly from the hammer and through a bore 48 of the b olt, theforward end of such bolt being separate or rigid therewith as preferred,and in the form of a firing pin 50, adapted to be projected forwardlybeyond the bore of the bolt and into ring relation with the projectileI4. A collar 5I is fastened onv the firing rod 41 and an expansive coilspring 52 surrounds the firing rod. abutting the shoulder 5I and theforward end of a sleeve or tube 53 surrounding the firing rod andabutting the hammer.

The bolt I5, proper, snugly fits the bore I2. 0n the periphery of thebolt is a detent spring 54 screwed thereto as at 55, the tendency of thedetent spring 54 being to move outwardly slightly at its free end, whenthe bolt and associated parts are retracted.

Fired projectiles are adapted to be discharged through the opening 23upon retraction of the bolt and action of an ejector 58 pivotallymounted as at 56 within the receiver and having a shoulder at 51,engageable by one of the lugs 20 as the bolt is retracted, to throw theforward end 58 of the ejector into engagement with the projectlle I4 anddischarge it through the opening 23.

Said ejector pivot member 58' is preferably connected to lugs 59 carriedby a removable spring latch 60, secured as by a screw 3| to thereceiver. Said latch 60 has a thumb piece 52.

It will be realized that one of the lugs 2li when the bolt is retracted,will in addition to engaging and actuating the shoulder 51 of theejector, abut the lugs 59, thus limiting the retraction of the bolt. Inthe event the bolt is to be completely removed, as for inspection orrepair, the thumb piece 62 is engaged and the latch 60 sprung outwardly,so that the shoulder 51 and'lugs 59 will not be in the path of outwardmovement ofthe adjacent lug 20.

The flring rod 41 preferably has a safety 63 connected thereto, forinstance being of the screw type as suggested at 64. V

Presuming operation, if a shell has been fired as in Figures 1 and 3 ofthe drawings, the handle 34 is pulled in a straight line horizontallytoward the butt of the gun, moving therewith the bolt and connectedparts and projectile I4, the relatively movable parts and worm or screwengagement at 28 and 29 moving the lugs 20 and 2I into alinement withthe slots 22 and thence moving the bolt in a rectilineal path rearwardlyuntil one of the lugs 20 strikes the shoulder 51, thereby moving the end58 of the ejector into engagement with the projectile I4, causing thelatter to be moved outwardly through the opening 23. When such bolt isthus withdrawn, the sleeve or rear end of the detent 54 springslaterally outwardly to a slight extent, engaging the end of the sleeve21, and preventing accidental return of the sleeve and associated partsto the rst mentioned position. A fresh projectile may be thrust throughthe opening 23 into the bore of the receiver where it is engaged by theabutment I6 and hooks I8, following which the handle or operating member34 is thrust forwardly moving the bolt and associated parts forwardlyuntil the lugs 20 and 2I aline with the grooves 24 and 25 at which time,vthe snug flt of the bolt in the bore I2 retracts the detent 54, and thespring 52 causes the bolt to turn in the arcuate slots 24 and 25, thuslocking the bolt in such position.

It will be realized that during the aforesaid forward movement of theoperating member 34,

trigger 45 is pulled, the end 45 is retracted, whereupon the tension ofthe spring 52 pulls the bammer 42 forwardly, thus driving the firing rod41 and firing pin 54 into engagement with the pro- :lectile I4.

Various changes may be resorted to provided grey fall within the spiritand scope of the inven- I claim as my invention:-

1. In combination, a bolt, a receiver mounting the bolt for longitudinalandv rotary movement relatively to the receiver, interengaging lugs andgrooves between the bolt and receiver, a sleeve about the bolt, a spiralrib connection between the sleeve and bolt, a bushing on the bolt, anoperating handle pivoted to the bushing and interengaged with saidsleeve to move the latter to rotate the bolt, a firing rod in said bolt,mounted for sliding movement, a hammer connected to said firing rod, aspring associated with said firing rod tensioned through the applicationof the bolt, whereby upon operation, the spring will operate the hammerand rod.

2. In combination, a bolt, a receiver mounting the bolt for longitudinaland rotary movement relatively to the receiver, interengaging lugs andgrooves between the bolt and receiver, a sleeve about the bolt, a spiralrib connection between the sleeve and bolt, a bushing on the bolt, anoperating handle pivoted to the bushing and interengaged with saidsleeve to move the latter to rotate the bolt, a firing rod in said bolt,mounted for sliding movement, a hammer connected to said firing rod, aspring associated with said firing rod tensioned through the applicationof the bolt, whereby upon operation, the spring will operate the hammerand rod, said interengaging means between the receiver and boltconsisting oi' radially opposite lugs on the bolt, another lug onthebolt longitudinally-alined with one of the first mentioned lugs,diametrically opposite longitudinal grooves in the receiver engaged bythe lugs, and arcuate grooves for the lugs extending from the firstmentioned grooves.

3. In combination, a bolt, a receiver mounting the boit for longitudinaland rotary movement relatively to the receiver, interengaging lugs andgrooves between the vbolt and receiver, a sleeve about the bolt, aspiral rib connection between the sleeve and bolt, a bushing on thebolt, an operating handle pivoted to the bushing and interengaged withsaid sleeve to move the latter to rotate the bolt, a firing rod in saidbolt, mounted for sliding movement, a hammer connected to said firingrod, a spring associated with said firing rod tensioned through theapplication of the bolt, whereby upon operation, the spring will operatethe hammer and rod, said bolt having a reduced portion on which saidbushing is disposed, and a ring nut secured to the reduced portion atone end of the bushing.

4.' In combination, a bolt, a receiver mounting the bolt forlongitudinal and rotary movement relatively to the receiver,interengaging lugs and grooves between the bolt and receiver, a sleeveabout the bolt, a spiral rib connection between the sleeve and bolt, abushing on the bolt, an operating handle pivoted to the bushing andinterengaged with said sleeve to move the latter to rotate the bolt, afiring rod in said bolt, mounted for sliding movement, a hammerconnected to said firing rod, a spring associated with said firing rodtensioned through the application of the bolt, whereby upon operation,the spring will operate the hammer and rod, said bolt having a u ysurrounding the rod and engaging said tube and said abutment.

5. In combination, a bolt, a receiver mounting u the bolt forlongitudinal and rotary movement relatively to the receiver,interengaging lugs and grooves between the bolt and receiver, a sleeveabout the bolt, a spiral rib connection between the sleeve and bolt, abushing on the bolt, an operating handle pivoted to the bushing andinterengaged with said sleeve to move the latter to rotate the bolt,afiring rod in said bolt, mounted for sliding movement, a hammerconnected to said ring rod, a spring associated with said ring rodtensioned through the application of the bolt, whereby upon operation ofthe trigger, the spring will operate the hammer and rod, the rear end ofsai'd sleeve having a notch, and said hammer having a projection in linewith and adapted to engage said notch.

6. In combination, a bolt, a receiver mounting the bolt for longitudinaland rotary movement relatively to the receiver, interengaging lugs andgrooves between the bolt and receiver, a sleeve about the bolt, a spiralrib connection between the sleeve and bolt, a bushing on the bolt, anoperating handle pivoted to the bushing and interengaged withsaid sleeveto move the latter to rotate the bolt, a firing rod in said bolt,mounted for sliding movement, a hammer connected to said ring rod, aspring associated with said firing rod tensioned through the applicationof the bolt, whereby upon operation, the spring will operate the hammerand rod.

7. In combination, a. bolt, a receiver mounting the bolt forlongitudinal and rotary movement relatively to the receiver,interengaging lugs and grooves between the bolt and receiver, a sleeveabout the bolt, a spiral rib connection between the sleeve and bolt, abushing on the bolt, an operating handle pivoted to the bushing andinterengaged with said sleeve to move the latter to rotate the bolt, aring rod in said bolt mounted for sliding movement, and a hammerconnected to the firing rod.

VALENTINE J. KING. u

